Method of securing bushings to sheet metal drums, kegs, and like receptacles



Aug. 11,11936. FRANCls 2,050,942

METHOD OF SECURING BUSHINGS TO SHEET METAL DRUMS, KEGS, AND LIKE RECEPTACLES Filed Jan. 17, 1935 Patented Aug. 11, 1936 x I 2,050,947;

UNITED STATES? PATENTIOFFiQE METHOD OF SECURING BUSHINGS TO SHEET METAL DRUMS, KEGS, AND LIKE BECEPTACLES James Henry Edward Francis, London, England Application January 1'1, 1935, Serial No. 2,227 In Great Britain April 25, 1934 2 Claims. (01. 29-1482) This invention relates to a method of securing cylindrical flange a. A socket b internally screw bushings to sheet metal drums, kegs and like threaded to receive a correspondingly threaded receptacles. Such a receptacle, particularly plug 0, has an external diameter equal to or apwhen adapted to contain oil, is usuallyprovided proximating to the internal diameter 'of the with a filling and discharging opening either in cylindrical flange a, as shown in Figs. 3-5. 5 the head or in the wall of the drum or keg near The socket b is furnished with a flange b and the bottom and to allow for drawing off its conan exterior annular recess b. This socket b is tents. This opening is normally closed by a then inserted from the inner side of the drum screw plug which is removed to allow for the into the cylindrical flange a, see Fig. 5, a pack-' insertion of the screw spigot of a tap, and in ing ring d being first interposed between the 10 order to secure a screw socket or bushing for parts as shown. Pressure is now applied in any the screw plug within the opening in the drum well known manner to cause the metal constior keg various constructions have been employed tilting the flan a to o inwardly into intito ensure a liquid tight joint between the parts. mate contact with the recess b of the socket,

Now the objects of the present invention are whereby the p edge O the flange is brought 15 to lessen the cost of manufacturing such types into a position below the upper edge of the of closure, whilst at the same time obtaining a socket b, Shown in g- The flange is secure liquid tight joint between the screwed p e e a y o Such a depth that when distorted socket and the drum and the screwed plug and by radial pressure to tightly embrace the recess the socket. b it entirely fills said recess in a vertical direc- 20 The present invention consists in forming an tiOIJ. The recess 1) instead Of being rectangular outwardly projecting flange in the edge of an in cross section, as shown, may be semicirculanf opening in the drum; forming an intemally It will be seen that when the parts are thus enscrew threaded. socket with an external diameter eas d. e p g ring 11 Will be distorted. as

equal or approximately equal to that of the openshown in Fig- 2. t s making a liquid tight J n ing in the drum, forming a projecting flange on between the P the lower edge of the socket and a recessbelow Any means may be P e for Preventing the top edge of the socket, inserting th k t relative movement between the drum and the from the inner side of the drum into the flanged socket in ut the preferred a an m n s t opening with or without an inter o d pacmng form holes, for instance say four holes b, in the 30 ring or gasket, then pressing the flanged edge flange b of the socket with which engage bosses of the drum inwardly into intimate contact with formed in the Well 11 0f the These the recess in the socket whereby the edge of the osses a may be or by punch out the drum is brought into a position below the upper wall ofthe drum either after the flange a has edge of the socket and providing means for prebeen swaged in th recess r the bosses 5 venting relative movement. between the drum maybe m m on the inner surface of the wall and, the socket. beforesuch operation.

This invention will be now more particularly The p u c-r e e fo ed by die cas described making reference to the accompanying-is formed with a recess below the flange 0 ing drawing, in whichz-r v adapted to receive a washer or packing ring e, 40 40 Fig. 1 is a view in plan of a closure embodying so that when the plug 0 is screwed home in the the present invention. socket b, the washer or packing ring e is com- Fig. 2 is a view in section on line il-ll of pressed between the top edge of the socket b and Fig. 1. the flange c of the plug, as shown in Fig. 2. Fig. 3 is a sectional view in side elevation of The plug c is preferably formed with a hollow 45 the flanged opening in the wall of the drum. or recess c in its head extending to near the Fig. 4 is a similar view of the socket, and bottom of the plug with lugs c extending above Fig. 5 is a similar view showing the socket inthe surface of the head and is so shaped as'to serted in the flanged opening before the latter enable the plug to be readily removed with ais operated upon to embrace the'socket. bar or key of practically any shape. For in- Throughout the views similar parts are marked n t e hollow 1 recess 02-18 h pe in plan, m

with like letters of reference. to comprise a cross shaped recess c super-im- The wall a of a sheet metal drum is formed posed thereon. The walls of the square shaped v with a-circular hole a. Theedge of this hole is recess c and a portion of the walls constitutturned up outwardly to forman upstanding ing the cross shaped recess c are extended upwardly beyond the surface of the head of the plug to form the projecting lugs 0'. These lugs c may be drilled with transverse holes to receive a sealing wire which is passed through one of said holes and threaded through a loop or tag attached to the drum or key and the ends of the wire fastened together by a lead or like seal in known manner.

A relatively thin sheet metal can 1. shown in dotted lines in Fig. 2, may be placed over the plug c and secured in position by beading its edge into the recess formed by the inturned flange a and the top edge of the socket b.

I declare that what I claim and desire to secure by Letters Patent is:-

l. The method of securing a bushing to a sheet metal drum consisting in forming an outwardly projecting flange in the edge of an opening in the drum, forming an internally screw threaded bushing adapted to receive a screw threaded plug, the said bushing being of an external diameter approximately equal to that of the opening in the drum and having a projecting flange on its lower edge and an exterior recess below its top edge, inserting the bushing from the inner side of the drum into the flanged opening in the drum with an interposed gasket, then pressing the flanged edge of the drum inwardly into intimate contact with the recess in the bushing whereby the edge of the drum flange is brought into a position below the upper edge of the bushing and providing means for preventing relative movement between the drum and the bushing, as set forth.

- 2. The method of securing a bushing to a sheet metal drum consisting in forming an outwardly projecting flange in the edge of an opening in the drum, forming an internally screw threaded bushing adapted to receive a screw threaded plug, the said bushing being or an external diameter approximating to that of the opening in the drum and having a projecting flange on its lower edge and an exterior recess below its top edge, inserting the bushing from the inner side of the drum into the flanged opening in the drum with an interposed gasket, pressing the flanged edge of the drum inwardly into intimate contact with the recess in the bushing whereby the edge of the drum flange is brought into a position below the upper edge of the bushing and providing means for preventing relative movement between the drum and the bushing consisting in forming holes in the flange of the bushing and inwardly projecting bosses in the wall of the drum above the flange oi the bushing and causing the' basses to engage said holes, as set forth.

JAMES HENRY EDWARD FRANCIS. 

